Shielded magnetic rings are commonly used in electronic circuits and communication equipment to achieve the following functions:
1.Electromagnetic Compatibility (EMC) magnetic rings can be used to suppress high-frequency noise and prevent electromagnetic interference (EMI). In the circuit, especially in the transmission of high-frequency signals, the shielded magnetic ring can effectively reduce the interference signal radiated out and ensure the electromagnetic compatibility of the equipment.
2.Signal Integrity (SI) In high-frequency circuit designs, magnetic rings can also be used to maintain the integrity of the signal and prevent it from being distorted by external interference.
3.Anti-interference**: The magnetic ring can also play a certain role in anti-interference, which can block the interference of external electromagnetic fields inside the equipment and protect the internal circuits of electronic equipment from the influence of external electromagnetic fields.
4.Magnetic Circuit Closure: In some applications, such as motors and sensors, magnetic rings are used to form a closed magnetic circuit to enhance the utility of magnetic fields or for specific electromagnetic field designs.
5.*Filtering**: Some magnetic rings have a filtering function, which can be designed to allow or block the passage of signals at specific frequencies, acting as high-pass, low-pass, or band-pass filters.
The exact role of a magnetic ring depends on its material (e.g., ferromagnetic), size, how the coil is wound, and the specific design of the application. These factors need to be considered when designing and applying shielded magnetic rings to meet the expected EMC and signal integrity requirements.